Mass Save® Participating home performance contractors

The contractors on this participate in the Mass Save Home Energy Services Program and serve National Grid customers.  Participating Home Performance Contracts are eligible to perform Home Energy Assessments and implement approved weatherization improvements.

In order to participate in the Mass Save Home Energy Services Program and to work with the contractors listed you must:

  • Have an active National Grid gas account OR active National Grid electric account in a non-gas heated home

  • Occupy a 1 to 4 family home

Weatherization work associated with new construction, additions, renovations, or any other projects where weatherization is required to be completed in order to meet state or local codes as not eligible for the Home Energy Services Program incentives.  Other restrictions may apply.  Please note, National Grid and Mass Save do not endorse, guarantee or warranty any particular contractor, manufacturer or product.  All Participating Contractors are licensed and insured in the state of Massachusetts and have completed program required training.

Mass Save offers standardized pricing for program-approved weatherization improvements for your convenience, soliciting several quotes is not required. 

If you are a customer of Eversource, National Grid, Cape Ligh Compact, Liberty Utilities, Berkshire Gas, Columbia Gas of Massachusetts or Unitil you may be eligible to take advantage of the Mass Save Home Energy Services Program.  For a list of participating contractors for the other utilities and energy efficiency service providers, visit the Working with a Contractor page under the Home Energy Assessments section the website.

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